Cohort progression — TKKF Szczygłowice
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 50 freestyle50 backstroke50 breaststroke100 freestyle25 backstroke50 butterfly25 freestyle100 breaststroke100 medley100 backstroke200 freestyle100 butterfly200 backstroke25 breaststroke200 medley
Cohorts to compare: 2015 92014 152013 222012 162011 242010 232009 192008 212007 172006 122005 92004 222003 142002 222001 41999 4